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65-68 427 crankshaft question
i have a call into green sales looking for a oem 427 crank , they said there is 4 or 5 different cranks for these years?, does any one know what the 4 or 5 would be and where i could find part numbers or casting numbers?.
what crank would be best for a new build?. |
How about a 428 1U crank, fits a 427 block nicely, easier to find and usually cheaper.
My hats off to you though for wanting the 'real deal', a steel 427 crank, very nice! |
i wanted to find a original 427 crank if not i will go with the scat 3.98, it seems that every body is building 468 and 482 strokers with the 4,125 and the 4.250 stroke cranks. i was dissapointed to find out no body makes a replacement crank in the 3.78 stroke?.
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I might have an original here - just showed up. At this moment it is condition unknown - thus price unknown. I would personnally cut down a 391 truck crank...
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barry i had e mailed you i wanted to talk to you about a 427 for my ffr, when is a good time to call you?. i wanted some advise on a street motor using a genesis block, are the 468 and 482's to much motor for a cobra replica?.
would i be better off with the scat 3.98 crank 6.4 rods and 4.250 pistons i want to use my mass flo fuel injection with a victor signle plane intake, i thought the bigger motors will need a lot of cyl head. |
so where can i find info on crankshaft numbers?
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Barry, what has to be done to a 391 trunk crank other than the reducing the snout and cutting a new keyway? Thanks, Jim
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wrench 87,
Go to ebay and lookup midlifeclassics interchange books they have a neat one on all FE motors. I absolutley love mine. Toby |
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C4AZ-6303-H 427 4-8v 63/65 Iron C5AZ-6303-C 427 4-8v 66/67 Steel C8AZ-6303-B 427 4v SPL 68 Iron C9AZ-6303-D 427 All All years Steel (Nascar - wide journal ) C7TE-6303-B 391(truck) All years Steel Jac Mac |
i dont trust it why would it have discoloration on some of the rod journals?
could it have been overheated? 1500.00 to buy now that is a little pricy. i would have no problem buying a scat steel crank, but i wanted the 3.78 stroke. may think about a 391 truck crank but what are the machine costs to get it ready to bolt in?. |
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I run a cast "390" crank in mine, some 427's came with cast cranks, as mine was an original replacement short block with a cast crank from Ford. I've heard that drag racers preferred them over the steel ones, because they were lighter, i.e. faster, and still good for 700hp. |
Thanks Anthony. I have a 390 crank and a steel 391 crank. Just not sure which way I want to go for my 427. Jim
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would i be better off buying a scat 3.98 crank over a vintage 390 crank?
what would be the pro's and cons?. |
Using a 428 crank in a 427 block! Can it be balanced internally with mallory weight? Which is the best crank to use? 428, CJ, SCJ, Scat or Shelby?
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As to which crank is best is usually determined by what you are trying to accomplish with your engine, high torque, high RPM's, etc. Which manufacturer is an often debated topic, I chose a Scat, quality product with a good reputation, I didn't go with Shelby because they pissed me off on the phone, but thats my issue. At some point I may change out and use my steel 427 crank, but for now I am in pursuit of a torque monster, thus the 428. |
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It just shows that you can build decent torque with a stock stroke. |
I am in complete agreement with you Anthony, the 3.78 offers plenty of torque, but for my needs/desires, the longer stroke along with the higher compression offered by the 3.98 fit my plan to go faster sooner, quicker. I wanted the stump puller, especially from a standing start.
My build was from the bare block up, with the emphasis on a strong bottom end, and a new steel crank, not nodular iron, this was important to my plan. |
Sorry it took me sooo long to find my way back to this thread. The gent that mentioned trimming the flywheel flange is correct. The counterweights are a something of a non-issue. Not real expensive work in the scheme of things - a few hundred will usually get a good core ready to run.
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